Good men are the stars, the planets of the ages wherein they live, and illustrate the times. Ben Jonson
A time will come when men will stretch out their eyes. They should see planets like our Earth. Christopher Wren
The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do. Galileo Galilei
Astronomy teaches the correct use of the sun and the planets. Stephen Leacock
Perhaps when distant people on other planets pick up some wavelength of ours all they hear is a continuous scream. Iris Murdoch
The nations of the world will have to unite for the next war will be an interplanetary war. The nations of Earth must some day make a common front against attack by people from other planets. Douglas MacArthur